Innospec Inc. (IOSP)
IOSP moved a median of +0.01% 30 minutes after news, and -0.28% by the close. How IOSP actually reacts to news — the realized, point-in-time move the market made, measured across 197 labeled events over the last three years with zero look-ahead.
IOSP’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 32% | 193 |
| 30-min | +0.01% | 50% | 197 |
| 60-min | -0.03% | 44% | 197 |
| to close | -0.28% | 48% | 197 |
| Middle 50% of IOSP reactions | -0.40% to +0.31% |
|---|---|
| Median reaction (30-min) | +0.01% |
| Measured reactions | 197 |
Half of all Innospec Inc. news events land between -0.40% and +0.31% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How IOSP reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 16 | -0.80% | 38% | -0.21% |
| Analyst downgrades | 11 | +0.18% | 73% | -0.35% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 2 further classes were observed with fewer than 10 measured events and are not published. See how IOSP ranks against every other measured name →
That’s how IOSP usually reacts — get an email when it moves on news →Email me when IOSP moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to IOSP's baseline. Nothing else.
Recent IOSP events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Innospec Schedules Third Quarter 2026 Earnings Release and Conference Call | Press release | GlobeNewswire | +0.97% | +0.28% | |
| Form 10-Q INNOSPEC INC. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.69% | +2.48% | |
| Form 8-K INNOSPEC INC. For: Aug 04 | SEC filing · Form 8-K | SEC EDGAR | -0.42% | +1.86% | |
| Innospec Reports Second Quarter 2026 Financial Results | Press release | GlobeNewswire | -0.42% | +1.86% | |
| Innospec Schedules Second Quarter 2026 Earnings Release and Conference Call | Press release | GlobeNewswire | -0.01% | -1.25% | |
| Innospec Publishes 2025 Sustainability Report Highlighting Measurable Progress and Responsible Growth | Press release | GlobeNewswire | +0.00% | +0.34% | |
| Form 8-K INNOSPEC INC. For: Jun 02 | SEC filing · Form 8-K | SEC EDGAR | -0.60% | +0.10% | |
| Form SD INNOSPEC INC. | SEC filing · Form SD | SEC EDGAR | -1.01% | +1.15% | |
| Form 8-K INNOSPEC INC. For: May 08 | SEC filing · Form 8-K | SEC EDGAR | +0.33% | -0.97% | |
| Form 10-Q INNOSPEC INC. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.89% | +2.35% | |
| Form 8-K INNOSPEC INC. For: May 07 | SEC filing · Form 8-K | SEC EDGAR | -0.15% | +2.19% | |
| Innospec Reports First Quarter 2026 Financial Results | Press release | GlobeNewswire | -0.15% | +2.19% | |
| Innospec Schedules First Quarter 2026 Earnings Release and Conference Call | Press release | GlobeNewswire | +1.02% | +2.32% | |
| Form DEF 14A INNOSPEC INC. For: May 08 | SEC filing · Form DEF | SEC EDGAR | +0.61% | +2.94% | |
| Form DEFA14A INNOSPEC INC. | SEC filing · Form DEFA14A | SEC EDGAR | +0.61% | +2.94% | |
| Form ARS INNOSPEC INC. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.71% | +1.03% | |
| Form 10-K INNOSPEC INC. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.93% | -1.20% | |
| Form 8-K INNOSPEC INC. For: Feb 17 | SEC filing · Form 8-K | SEC EDGAR | +0.89% | -3.46% | |
| Innospec Reports Fourth Quarter and Full Year 2025 Financial Results | Press release | GlobeNewswire | +0.89% | -3.46% | |
| Innospec Fuel Specialties Announces New Partnership With Africa Gifted Foundation to Advance Stem Education for Young Women | Press release | GlobeNewswire | +0.24% | +0.51% | |
| Innospec Schedules Fourth Quarter 2025 Earnings Release and Conference Call | Press release | GlobeNewswire | +0.06% | +0.73% | |
| Form 10-Q INNOSPEC INC. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.09% | +2.09% | |
| Form 8-K INNOSPEC INC. For: Nov 04 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +2.98% | |
| Innospec Reports Third Quarter 2025 Financial Results | Press release | GlobeNewswire | +0.00% | +2.98% | |
| Innospec Schedules Third Quarter 2025 Earnings Release and Conference Call | Press release | GlobeNewswire | +0.90% | +2.57% | |
| Innospec and International Justice Mission (IJM) Enter Second Year of Partnership to Protect Palm Oil Workers in Indonesia | Press release | GlobeNewswire | +0.34% | +1.88% | |
| Form 10-Q INNOSPEC INC. For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.78% | +4.13% | |
| Form 8-K INNOSPEC INC. For: Aug 05 | SEC filing · Form 8-K | SEC EDGAR | -1.79% | -3.14% | |
| Innospec Reports Second Quarter 2025 Financial Results | Press release | GlobeNewswire | -1.79% | -3.14% | |
| Innospec Publishes 2024 Sustainability Report | Press release | GlobeNewswire | -0.76% | +0.17% | |
| Innospec Schedules Second Quarter 2025 Earnings Release and Conference Call | Press release | GlobeNewswire | +0.11% | +0.37% | |
| Form SD INNOSPEC INC. | SEC filing · Form SD | SEC EDGAR | -0.76% | -0.78% | |
| Form 8-K INNOSPEC INC. For: May 09 | SEC filing · Form 8-K | SEC EDGAR | +0.31% | -2.27% | |
| Form 10-Q INNOSPEC INC. For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.67% | +1.11% | |
| Form 8-K INNOSPEC INC. For: May 08 | SEC filing · Form 8-K | SEC EDGAR | +0.22% | +0.20% | |
| Innospec Reports First Quarter 2025 Financial Results | Press release | GlobeNewswire | +0.22% | +0.20% | |
| Innospec Schedules First Quarter 2025 Earnings Release and Conference Call | Press release | GlobeNewswire | +1.29% | +0.54% | |
| Form DEF 14A INNOSPEC INC. For: May 09 | SEC filing · Form DEF | SEC EDGAR | -0.58% | -2.06% | |
| Form DEFA14A INNOSPEC INC. | SEC filing · Form DEFA14A | SEC EDGAR | -0.58% | -2.06% | |
| Form ARS INNOSPEC INC. For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | -0.01% | +0.19% | |
| Form 8-K INNOSPEC INC. For: Mar 10 | SEC filing · Form 8-K | SEC EDGAR | -1.13% | -0.77% | |
| Innospec Approves New $50MM Share Repurchase Program | Press release | GlobeNewswire | -1.13% | -0.77% | |
| Innospec Expands Production of Drag Reducing Agents | Press release | GlobeNewswire | -0.16% | -3.85% | |
| Innospec and UNESCO IESALC Sign Partnership to Increase Indigenous Participation in Stem Education and Initiatives in Brazil | Press release | GlobeNewswire | +0.99% | +0.42% | |
| Form 10-K INNOSPEC INC. For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -1.43% | +0.69% | |
| Form 8-K INNOSPEC INC. For: Feb 18 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -3.58% | |
| Innospec Reports Fourth Quarter and Full Year 2024 Financial Results | Press release | GlobeNewswire | +0.00% | -3.58% | |
| Innospec Schedules Fourth Quarter 2024 Earnings Release and Conference Call | Press release | GlobeNewswire | +0.67% | +0.49% | |
| Form 10-Q INNOSPEC INC. For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | +0.13% | +0.45% | |
| Form 8-K INNOSPEC INC. For: Nov 05 | SEC filing · Form 8-K | SEC EDGAR | -1.08% | +2.18% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the IOSP section they belong to.
Where else IOSP is measured.
IOSP earnings → · Analyst actions → · SEC filings →
Other Basic Materials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| ICL Group Ltd. Ordinary Shares (ICL) | 202 | -0.08% | 46% |
| Hawkins, Inc. (HWKN) | 201 | +0.19% | 54% |
| U.S. Gold Corp. (USAU) | 195 | +0.14% | 54% |
| YULONG ECO MATERIALS LTD (YECO) | 195 | 0.00% | 42% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Basic Materials names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Innospec Inc.'s median reaction calculated?
Every labeled IOSP news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 197 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 50% of IOSP's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does IOSP's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.